In this study, the variational quantum algorithm is implemented in Pennylane (Xanadu) [1]} using a statevector simulator with the Qulacs [2]} plugin as a backend for quantum simulations, and the L-BFGS-B optimizer for parametric updates. Amplitude encoding is carried out via the standard Mortonnen state preparation template [3]} with custom global phase correction. For hardware emulation via the QASM simulator (Qiskit), we refer the reader to the excellent cost-sampling analysis of Sato et al. [4]}.
